US12059761B2 - Platform for conveying work parts in an assembly line, and method for placing work parts on the same - Google Patents

Platform for conveying work parts in an assembly line, and method for placing work parts on the same Download PDF

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Publication number
US12059761B2
US12059761B2 US17/631,241 US201917631241A US12059761B2 US 12059761 B2 US12059761 B2 US 12059761B2 US 201917631241 A US201917631241 A US 201917631241A US 12059761 B2 US12059761 B2 US 12059761B2
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Prior art keywords
inclined surface
platform
elements
work part
plane
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US17/631,241
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US20220266401A1 (en
Inventor
Bernard Negre
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ABB Schweiz AG
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ABB Schweiz AG
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Assigned to ABB SCHWEIZ AG reassignment ABB SCHWEIZ AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NEGRE, BERNARD
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with program control
    • B23P21/004—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with program control the units passing two or more work-stations whilst being composed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/14—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top
    • B25H1/18—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for adjusting the bench top in inclination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • B62D65/022—Transferring or handling sub-units or components, e.g. in work stations or between workstations and transportation systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • B62D65/18—Transportation, conveyor or haulage systems specially adapted for motor vehicle or trailer assembly lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/4189—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the transport system
    • G05B19/41895—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the transport system using automatic guided vehicles [AGV]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • This disclosure relates to the field of industrial manufacturing, more specifically to a flexible mobile platform configured to host a plurality of work parts with different shapes.
  • the first step of such a process is a configuration step, wherein the mobile platform is prepared before it is loaded with the set of work parts.
  • the configuration step consists in providing specific supports elements on the platform, each of these specific supports elements being dedicated to support specific work parts to be loaded on the platform.
  • each new automotive model could require a different and specific platform configuration process, based on the specific work parts involved in the assembly of the new automotive model. Therefore, the specificity of the different supports elements which are installed on the platform during the configuration step makes it a complicated and costly step.
  • Embodiments of the present disclosure provide a platform for conveying a plurality of work parts in a sequence of manufacturing stations, the platform being mobile and including an inclined surface, and a set of two elements, each element of the two elements being attached to the inclined surface, one element of the set extending along a first plane and another element of the set extending along a second plane, the first plane and the second plane crossing the inclined surface, an intersection of the first plane with the inclined surface defining a first direction, the first direction being oriented upwards with respect to a slope of the inclined surface, an intersection of the second plane with the inclined surface defining a second direction, the second direction being oriented upwards with respect to the slope of the inclined surface, the first direction and the second direction delimiting an angular sector, so that a work part placed on the inclined surface within the angular sector is driven by its weight downwards with respect to the slope of the inclined plane towards an intersection of the first direction and the second direction.
  • Embodiments of the present disclosure include one or more of the following features, alone or in any combination technically compatible.
  • the angle formed inside the angular sector is greater than 0 degree, and less than 180 degrees, and may be between 20 degrees and 160 degrees, between 60 degrees and 120 degrees, or even between 80 degrees and 100 degrees.
  • a vertical plane intersects the inclined surface along a third direction oriented upwards with respect to the inclination of the inclined surface, the third direction being within the angular sector.
  • a first oriented angle between the third direction and the first direction and a second oriented angle between the third direction and the second direction are of opposite signs with respect to an angular orientation.
  • the work part is more efficiently driven by its weight downwards, towards the intersection of the first direction and the second direction.
  • the first direction and the third direction form a first angle and the second direction and the third direction form a second angle, at least one of or both of the first angle absolute value and the second angle absolute being strictly less than 90 degrees, and in some embodiments being less than 60 degrees.
  • the set of at least two elements constitutes a generic set of supporting elements, adapted to accommodate for the positioning of work parts with a great variety of shapes.
  • the work part will be resting stable on the inclined surface and against the first extension plane of one element of the set and against the second extension plane of another element at the set of at least two elements, whatever the shape of the work part.
  • the platform configuration does not need to be changed when a new model, with new work parts, is assembled.
  • this generic set of at least two elements can accommodate for a positioning of the work parts, which does not need to be very accurate, since it is configured so that by the effect of gravity the work part will be driven to the bottom of the hollow of the angular sector, even if its placement inside the angular sector is not precisely determined.
  • the platform includes at least two inclined surfaces, and at least two sets of two elements, each element of at least one set being attached to one of the at least two inclined surfaces and each element of at least another set being attached to another of the at least two inclined surfaces.
  • the inclined plane and/or each element of the set of two elements is (are) configured to enhance the sliding of a work part downwards along the inclined plane and/or along each element, when said work part is placed on the inclined plane.
  • the inclined plane and/or each element of the set of two element have a smooth surface with which the work parts are in contact when the work parts are placed on the inclined plane.
  • the inclined plane and/or each element of the set of two elements is (are) coated with a material having a coefficient of friction which is function of an inclination of the inclined plane and of another material composing the work parts.
  • the inclined plane and/or each element of the set of two elements include rolling rollers or rolling balls.
  • the platform is subjected to vibrations which enhance sliding of a work part downwards along the inclined plane and/or along each element of the set of two elements, when said work part is placed on the inclined plane.
  • the vibrations are generated by the displacement of the platform on a rough surface, which may be pavement.
  • the platform is autoguided.
  • the sequence of manufacturing stations is an automotive manufacturing assembly line.
  • the disclosure provides a method for positioning work parts on a platform according to anyone of the preceding claims, the method including the following steps:
  • FIG. 1 is a simplified side view of a platform according to an embodiment of the present disclosure.
  • FIG. 2 is a same side view of a platform, conveying work parts, according to an embodiment of the present disclosure.
  • FIG. 3 is a top view of a platform, conveying work parts, according to an embodiment of the present disclosure.
  • FIG. 4 is a front view and a side view of an angular sector S formed on the inclined plane by a set of at least two elements, at least one element of which extends along a first plane intercepting the inclined plane along a first direction D 1 , and at least one other element of which extends along a second plane intercepting the inclined plane along a second direction D 2 .
  • FIG. 5 is a perspective view of the same as FIG. 4 .
  • FIG. 6 is a schematic representation of a method according to an embodiment of the present disclosure.
  • the platform 1 is configured to convey work parts 3 to be assembled at different workstations of an assembly line.
  • the platform 1 may be a mobile platform that may be autoguided.
  • the work parts 3 being conveyed on the platform are each positioned on the platform so as to be maintained on the platform at a given position.
  • the platform includes at least one inclined plane 2 , 2 ′, the work parts being positioned on one of the inclined planes.
  • each of the inclined planes 2 , 2 ′ are fixed different sets of two elements; in FIG. 3 , one such set of two elements is represented, including two elements 4 , 4 ′; a second such set including two elements 5 , 5 ′, and a third set including two elements 6 , 6 ′, are also represented.
  • Each element of these sets is protruding transversally from the inclined plane, in such a way that each element is an obstacle for an object sliding downwards along the inclined plane 2 , 2 ′.
  • An element 6 of a set of at least two elements 6 , 6 ′ is extending along a first plane of extension, said first plane of extension being transverse to the inclined plane, so that the first plane of extension and the inclined plane intersect along a first direction D 1 , as illustrated in FIGS. 4 and 5 .
  • the first direction D 1 is oriented in an upward direction with respect to the slope of the inclined plane, as indicated in FIGS. 4 and 5 , where a horizontal direction H on the inclined plane 2 , 2 ′ is represented, as well as an upward direction D 3 of steepest slope.
  • the direction D 3 can be defined as the intersection of a vertical plane, i.e. a plane transverse to the horizontal direction H, with the inclined plane 2 , 2 ′.
  • An oriented angle A 1 is defined between direction D 3 and direction D 2 .
  • Another element 6 ′ of the same set of at least two elements 6 , 6 ′ is extending along a second plane of extension, said second plane of extension intersecting the inclined plane along a second direction D 2 , as illustrated in FIGS. 4 and 5 .
  • the second direction D 2 is oriented in an upward direction with respect to the slope of the inclined plane, so that an oriented angle A 2 is defined between direction D 3 and direction D 2 , and an angular sector S is formed between D 1 and D 2 .
  • the direction D 3 of steepest slope is within the angular sector S, i.e. oriented angle A 1 and oriented angle A 2 are of opposite signs with respect to a given angular orientation.
  • angle A 1 absolute value and angle A 2 absolute value are strictly less than 90 degrees.
  • one or both of angle A 1 absolute value and angle A 2 absolute value is less than 60 degrees.
  • the inclined plane and/or each element of the set of two elements is (are) configured to enhance the sliding of an object downwards along the inclined plane and/or along each element, said object being placed on the inclined plane.
  • the surface of the inclined plane 2 , 2 ′ and/or of the elements of the sets of elements 4 , 4 ′, 5 , 5 ′, 6 , 6 ′ attached to the inclined plane 2 , 2 ′ may be coated with some material having a coefficient of friction, the coefficient of friction being function of the inclination of the inclined plane, and of the material composing the work parts; or the surface of the inclined plane 2 , 2 ′ and/or of the elements of the sets of elements 4 , 4 ′, 5 , 5 ′, 6 , 6 ′ attached to the inclined plane 2 , 2 ′ may include rolling rollers or rolling balls.
  • the platform is subjected to vibrations which enhance sliding of an object downwards along the inclined plane 2 , 2 ′ and/or along each element of the sets of two elements 4 , 4 ′, 5 , 5 ′, 6 , 6 ′, said object being placed on the inclined plane.
  • the vibrations may be generated by the displacement of the platform on a rough surface, such as pavement for example.
  • the disclosure provides a method of positioning work parts 3 on a platform 1 , the method including the following steps:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automatic Assembly (AREA)
US17/631,241 2019-07-29 2019-07-29 Platform for conveying work parts in an assembly line, and method for placing work parts on the same Active 2040-01-05 US12059761B2 (en)

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PCT/EP2019/070305 WO2021018373A1 (en) 2019-07-29 2019-07-29 Platform for conveying work parts in an assembly line, and method for placing work parts on the same

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US12059761B2 true US12059761B2 (en) 2024-08-13

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US (1) US12059761B2 (de)
EP (1) EP4003640B1 (de)
CN (1) CN114173986A (de)
ES (1) ES2964294T3 (de)
WO (1) WO2021018373A1 (de)

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DE102021123009A1 (de) 2021-09-06 2023-03-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Flurförderwagen zum Transport von Fahrzeugteilen

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CN209021926U (zh) 2018-09-25 2019-06-25 广东远见精密五金有限公司 高度和角度可调的矫正夹具

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EP4003640A1 (de) 2022-06-01
US20220266401A1 (en) 2022-08-25
EP4003640B1 (de) 2023-08-30
ES2964294T3 (es) 2024-04-05
WO2021018373A1 (en) 2021-02-04
CN114173986A (zh) 2022-03-11

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